HARD COATING COMPOSITION

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United States of America Patent

APP PUB NO 20150024212A1
SERIAL NO

13947378

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a hard coating composition with which optical interference and a blue discoloration due to ultraviolet rays do not occur when applied to an ultrahigh refractive index organic glass with a refractive index exceeding 1.67. The hard coating composition is applied to an optical component body formed of an organic glass. An alkoxysilane hydrolyzate is a hydrolyzate of a mixture of a predetermined ratio of a trialkoxysilane and a tetraalkoxysilane, and an inorganic oxide colloid is blended to make a coating film refractive index approximate to the refractive index of the organic glass. The inorganic oxide colloid is a rutile-based colloid containing an amine dispersant. An organic carboxylic acid is used as a low-temperature curing catalyst of the hydrolyzate.

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Patent Owner(s)

Patent OwnerAddress
ITOH OPTICAL INDUSTRIAL CO LTDAICHI 443-0041

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Uchida, Naoki Gamagori-shi, JP 141 1014

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